Cord guide



April 10, 1928.

A. S. SPIDEL CORD GUIDE Eiled-Oot. 18, 1926 Patented Apr. 10, 1928. I

UNITED STATES PATENT OFFICE.

ARTHUR S. SPIDEL, OF BREWSTER; OHIO, ASSIGNOR F ONE-HALF TO E. A.HAMILTON, 0F NAVARRE, OHIO.

- CORD GUIDE.

My invention relates to cord guide members for the caps of separableattachment plugs for electric cables and the like.

These plug caps as ordinarily made, while being adapted for the properconnection of the cable cords by leading or snubbing the cords aroundthe contact blades and passing them over the top of the contact bladebase plates, are also adapted for improper connection of the cable cordswith the contact blades by leading the cords directly to the bindingscrews from the center of the cap without snubbing the cords around thecontact blades and without passing them over 5 the top of the contactblade base plates in the proper manner.

It is desirable to snub the cords around the contact blades and leadthem or'r the top of the contact blade base plates to the binding screwsto avoid short circuits, and to minimize the strain on the bindingscrews caused byapplying a tension to the cable attached to the plugcap.

One object of the present improvements is to provide cord guide membersfor the caps of separable attachment plugs which will permit theattachment of the cable cords. to the contact blades of the plugs onlyby the proper method of snubbing the cords about the contact blades andleading them over the top of the contact blade base plates to thebinding screws.

A large number of plug caps at present in use are of a standard form;and a further object of the present improvements is to provide a cordguide member as aforesaid which may be inserted into any standard capbefore or after manufacture of the cap.

These and ancillary objects areattained in the present improvements by aconstruction and arrangement .for the cord guide member, which may beset forth in general terms as including a cord guide member having a twobladed propeller like formation adapted to be inserted into a plugcapbetween the contact blades for maklng, with the plug cap, guidewaysfor the cablecords permittlng only the proper connection of the cablecords with the contact blades.

A preferred embodiment of the invention Fig. 2, a vertical cross-sectionthereof as on line 2-2, Fig. 1;

Fig. 3, a front perspective view of the propeller like cord guidemember;

gig. 4, a rear elevation view of the same; an

Fig. 5, a perspective view of the cord guide member, the contact blades,and a cable, il-, lustrating the arrangement ofthe cable cords relativeto the cord guide member and contact blades before snubbingthe cordsabout the contact blades and leading them over the top of the contactblade base plates.

Similar numerals'refer to similar parts throughout the drawing.

A cap indicated generally at 10 for a separable attachment plug forelectric cables and the like is provided with they improved cord guidemember 11 for forming with the Walls of the cap 10 guideways 12 for thecords 13 of the cable 14.

The plug cap 10 includes the molded cap dome 10' of rubber or the like,and contact blades 15 having base plates 16 are secured in a usualmanner upon the dome. An axial aperture 17 is provided for the dome andenlarges inside the dome into a slotted cham ber 18; and the cords 13 ofthe cable 14 are inserted through the aperture 17 each cord being guidedby the diagonal rear groove 19 of the propeller like cord guide member11 so that it must be snubbed around the blade 15 and over the base late16 for connecting the bared end 20 of t e cord to the binding screw 21mounted in the base plate.

The propeller like cord guide member 11 is centrally wide enou h to fittightly between the contact blades 15 and opposite sides of its oppositeends are curved as at 22 for fitting about the binding screws 21 to makecertain that the ends 20 of the cords 13 will be hooked about thebinding screws correctly from the outside as best illustrated in Fig. 1.

The outer ends 23 of the cord guide memher are preferably taperedtowards each other from the front face 24 of the guide for fittingtightly into the dome chamber'of the plug cap dome preferabl so that theouter 1 surface 24 of the cord gulde lies in the same is illustrated inthe accompanying drawing plane as the outer peripheral surface 25 offorming part hereof, in which Figure 1 is a blade end view of a plug capprovided with the improved cord guide;

the plug cap dome.

The cord guide member 11 is preferably made of the same composition asthe cap dome; and uncured cord guide members may be inserted in uncuredcap domes and the dome and guide of each plug cap cured together. On theother hand a' cured cord guide member may be press fitted into a curedcap dome after the cap dome has been assembled with the contact blades.

In addition to providin an internal conformation of the cap requiringthat in wiring the same, the cords be snubbed around the contact bladesand over the contact blade base plates, the cord guide member providesan eflicient insulation between the bared ends of the cords.

I claim:

1. A cap for a separable attachment plug and the like, and a cord guidemember in the cap, the cap having contact blades and base platestherefor, and the cord guide member having faces forming, together with'faces of the cap, guideways for snubbing cord wires about the contactblades and directing them over the base plates and forpreventingconnection of the cords to the base plates without snubbingthe cords about the contact blades.

2. A cap for a separable attachment plug and the like, and a cord guidemember in the cap; the cap having cont-act blades and base platestherefor, and the cord guide member having propeller-like faces forming,

together with faces of the cap, guideways for snubbing cord wires aboutthe contact blades and directing them. over the base plates and forpreventing connection of the cords to the base plates without snubbingthe cords about the contact blades.

3. A cord guide for the cap of a separable attachment plug and the like,including a front face, propeller-like side faces, and a diagonallygrooved rear face. 1

4. A cap for a separable attachment plug and the llke including contactblades, and base plates for the contact blades, and means in the capforming guideways for directing cords and the like about the blades andover the base plates and for preventing connec tion of the cords to thebase plates without snubbing the cords about the blades.

5. A cap for a se arable attachment plug and the like including contactblades, base plates for the-contact blades, and binding screws for thebase plates, and means in the cap forming guideways for directing cordsand the likeabout the blades and over the base plates to the bindingscrews and for preventing connection of the cords to the bindingscrews'without snubbing the cords about the blades.

In testimony that I claim the above, I have hereunto subscribed my name.

ARTHUR S. SPIDEL.

